package easy.id_701_800;

public class Lee709 {

    public String toLowerCase(String s) {
        StringBuffer sb=new StringBuffer(s);
        for(int i=0;i<sb.length();i++){
            char c=sb.charAt(i);
            if(c>='A' && c<='Z'){
                c=(char)(c+32);
                sb.setCharAt(i, c);
            }
        }
        return sb.toString();
    }
}
